HELP! BS@ will not identify! what to do?!?
Hi, have a pc laptop running xp, have BS2, have breadboard and serial cable connected to pins 1 thru 4 with correct connections Rx, Tx, Dtr, Gnd and Dsr + Rts shorted. I have tried 5v Reg going into VDD and 6 and 7.5v going through VIN.
The Identify say loop back YES and Echo YES, but no device type. When i unplug it and identify i get Loop YES and echo NO.
Whats happening. whats wrong here?
please help
The Identify say loop back YES and Echo YES, but no device type. When i unplug it and identify i get Loop YES and echo NO.
Whats happening. whats wrong here?
please help
Comments
Have you checked your source of power for the proper voltage?
Regards,
Bruce Bates
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Chris Savage
Parallax Tech Support
im very sure its ok,
the board is just a standard breadboard and the stamp sits in a little adapter (purely to save the pins, no electronic gubbins are installed)
What are FIFO buffers and how do i disable them?
is there a way of checking if the stamp is f*&%ed?
thanks
troika
And the FIFO buffers is a property of your serial port on your PC. Click Control Panel, System, Hardware Tab, Device Manager button, Ports. You should have a serial port (my laptop does not). Set any "FIFO" buffer size to zero, or click a box that disables FIFO buffering.
If you're using a USB adapter -- well, there's lots of USB adapters that don't properly implement the "handshake" signals. The FTDI one sold by Parallax works well, as does the Keyspan one. Belkin's have been known not to work, and most adapters marked "PDA" will NOT work.
thanks
below is the link from the stamp to serial pins:
pin 1 = rx
pin 2 = tx
pin 3 = dtr
pin 4 = GND (both the ground pin on the serial plug AND the GND of the chassis of the serial plug
dsr and rts are paired , i am not using usb
I have disabled FIFO buffers and this has not helped
Now we have the Stamp to DB-9 connector wiring. How is the serial cable wired (pin 1 on one side to pin ? on the other side, etc) and are you using a USB-to-Serial converter, or do you have a serial port on your PC?
Regards,
Bruce Bates
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whats db-9?
below are the pin no.s
serial to stamp
2 - 1
3 - 2
4 - 3
5 - 4
DB9 is the name of the 9-pin connector you are using... along with using pins 2,3,4,5, you also need to connect pins 6 and 7 together.
See link below:
www.parallax.com/dl/docs/prod/stamps/BS2pDemoCschem.pdf
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Beau Schwabe
IC Layout Engineer
Parallax, Inc.
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Chris Savage
Parallax Tech Support
The reverse reads positive.
Post Edited (troika) : 9/8/2006 12:26:03 PM GMT
I seem to still have the same problem,
i get the message:
Basic stamp 2 detected but not responding. Check Power.
Which i have done
Post Edited (troika) : 9/8/2006 12:44:58 PM GMT
Is you home-made serial cable still being used in this configuration? If so, that's what I'd suspect first. Second I'd spend my time examining the power supply closer.
Are you feeding power to the Stamp using the VIN pin, or the VDD pin?
Here are the limits for each of those Stamp pins:
VDD - REGULATED input voltage 4.5 => 5.5 VDC
VIN - Regulated or unregulated input voltage 5.5 => 12 VDC (7.5 VDC typical)
Regards,
Bruce Bates
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dodgy breadboard and therefore dodgy power.
tyhankyou so much for all you help everyone
youre great
now i enter the world of stamps!!
look at that LED go!!!!
OH how I love it when our respective crystal balls work and predict correctly
Regards,
Bruce Bates
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